BARK BEETLES OF THE GENUS HYLASTES 25) 
Elytra distinctly wider than pronotum (30:25), about 1.94 times as long as 
wide, sides subparallel on anterior three-fourths, moderately narrowly rounded 
behind; surface moderately shining; striae except first two rather weakly im- 
pressed; punctures rather small, close, moderately deep; interspaces distinctly 
wider than striae, weakly convex on disk, narrower and more strongly convex 
at sides and on declivity, finely rugose-granulate on disk, uniseriately granulate 
on declivity; vestiture of fine, rather short, irregularly arranged hairs on 
discal interspaces, declivity with a middle row of somewhat longer hairs in 
each interspace, with small, appressed scales at each side. Last abdominal 
sternite convex, moderately rounded behind, finely, densely, and somewhat 
roughly punctured. 
Male.—Slightly smaller, with sculpture often coarser and rougher; last 
abdominal sternite distinctly shorter, much more broadly rounded behind, 
more roughly punctured, but with the surface not grooved behind and without 
‘special pubescence. 
Type locality —Wilhams, Ariz. 
Additional localities —Winslow, Chiricahua Mountains, Ariz., and 
Las Vegas, N. Mex. 
Host _—U nknown, but probably Pinus spp. 
Holotype, cllotype, and 49 paratypes —U. S. National Museum 
No. 540387. 
Remarks.—The holotype. allotype, and 31 paratypes are labeled 
“Williams, Ariz.; Barber and Schwarz Coll.”; 3 paratypes, “Chiric[a- 
hua] Mts., Ariz.; Coll. Hubbard and Schwarz”: 1 paratype, “Chirica- 
hua Mts., Ariz. - Aug. 1907; J. L.. Webb, Coll.” si paratype, “Winslow, 
Aviz., Wickham”; 3 paratypes, “N. Mexico, Snow; Coll. Hubbard and 
Schwarz”; 8 paratypes, “Las Vegas H. S., N. M.; Barber and 
Schwarz Coll.” 
The specimens from Williams, Winslow, and the Chiricahua 
Mountains, Ariz., show considerable uniformity in all the essential 
characters, but some of the specimens from New Mexico, while agree- 
ing in the structure of the frons, the shape of the pronotum, etc., 
have the punctures of both pronotum and elytra coarser, approach- 
ing the conditions in mznutus and tenuis. 
HYLASTES MINUTUS, new species 
Female.—Dark reddish brown to piceous, 2.6 mm. long, about 3.08 times as 
long aS wide; allied to tenuis and parvus. 
Frons very broad between eyes, frontal rectangle about 0.96 as long as 
wide; piceous brown, scarcely lighter below; epistoma broadly, moderately 
deeply impressed, searcely at all elevated, not carinate in median line; epis- 
tomal margin somewhat thickened and liplike, its median lobe short, with free 
end emarginate; transverse impression rather indefinite, wide and shallow; 
surface opaque to subopaque, very finely and densely punctate-granulate; 
vestiture of very fine, short, inconspicuous hairs, slightly longer on epistoma. 
Hye finely granulate, slightly more than twice as long as wide, not strongly 
widened above; inner line entire. Antenna with first segment of club longer 
than other three combined. 
Pronotum about 1.2 times as long as wide; posterior outline feebly arcuate; 
posterior angles rounded, sides nearly straight and slightly diverging from base 
to widest point just in front of middle, then arcuately narrowed to the broadly 
rounded front; surface moderately shining, with punctures on disk of moderate 
size (coarser than in parvus and closer and slightly smaller than in fenuwis), 
smaller and denser in front, granulate-punctate on sides; side margins sub- 
acute behind; median line distinctly elevated, moderately wide. 
Elytra slightly wider than pronotum, about 2.03 times as long as wide; 
sides subparallel on anterior three-fourths, then arcuately narrowed to the 
narrow tip; surface feebly shining; first striae strongly, the others weakly im- 
pressed ; punctures close, rather deep, of moderate size (distinctly coarser than 
